Rockwell Automation 1763 MicroLogix 1100 Programmable Controllers User Manual - Manual (Page 219)

Publication 1763-UM001D-EN-P - March 2011
Connecting to Networks via Ethernet Interface 217
Cables
Shielded and non-shielded twisted-pair 10/100Base-T cables with RJ45
connectors are supported. The maximum cable length between an MicroLogix
1100 Ethernet port and a 10/100Base-T port on an Ethernet hub or switch
(without repeaters or fiber) is 100 m (323 ft). However, in an industrial
application, cable length should be kept to a minimum.
Straight-through cabling
IMPORTANT
When connecting the MicroLogix 1100 Ethernet port
to a 10/100Base-T Ethernet switch, note the
following recommendations:
•
Use the auto negotiation function for both the switch port and the
MicroLogix 1100 Ethernet port
•
If you want to force to a specific speed/duplex mode, you should
force the MicroLogix 1100 Ethernet port and leave the switch in
auto negotiation mode to match speed/duplex settings of the
MicroLogix 1100. Ethernet port.
•
If you want to disable the auto negotiation function for both
ports, then you should only force both the switch and the
MicroLogix 1100 port to either 100Mbps Half-duplex or 10
Mbps/Half-duplex.
If you attempt to force both the switch and the MicroLogix1100
port to either 100 Mbps Full-duplex or 10 Mbps Full-duplex, the
Ethernet link will not be established and Ethernet
communications will not work.
TIP
The Ethernet cabling with straight-through method is
recommended as below. Do not make the incorrect
connection.
Pin Pin Name Cable color
1 Tx+ Orange/White
2 Tx- Orange
3 Rx+ Green/White
4 No used by 10/100Base-T Blue
5 No used by 10/100Base-T Blue/White
6 Rx- Green
7 No used by 10/100Base-T Brown/White
8 No used by 10/100Base-T Brown